/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.dubbo.xds.registry;

import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.registry.client.ReflectionBasedServiceDiscovery;
import org.apache.dubbo.rpc.model.ApplicationModel;
import org.apache.dubbo.xds.PilotExchanger;

import static org.apache.dubbo.common.constants.LoggerCodeConstants.REGISTRY_ERROR_INITIALIZE_XDS;

public class XdsServiceDiscovery extends ReflectionBasedServiceDiscovery {
    private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(XdsServiceDiscovery.class);

    private PilotExchanger exchanger;

    public XdsServiceDiscovery(ApplicationModel applicationModel, URL registryURL) {
        super(applicationModel, registryURL);
        doInitialize(registryURL);
    }

    public void doInitialize(URL registryURL) {
        try {
            exchanger = PilotExchanger.initialize(registryURL);
        } catch (Throwable t) {
            logger.error(REGISTRY_ERROR_INITIALIZE_XDS, "", "", t.getMessage(), t);
        }
    }

    public void doDestroy() {
        try {
            if (exchanger == null) {
                return;
            }
            exchanger.destroy();
        } catch (Throwable t) {
            logger.error(REGISTRY_ERROR_INITIALIZE_XDS, "", "", t.getMessage(), t);
        }
    }
}
